PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-07:28:10
G02     201.0          23.0                5.3 +/-    2.46      10.8 +/-    2.46  0.220 / 0.440
G06     170.8          56.2                6.5 +/-    0.73       7.7 +/-    0.73  0.190 / 0.450
G13     224.6          11.2                5.2 +/-    2.93      14.2 +/-    2.93  0.060 / 0.100
G17     28.4           55.3                3.5 +/-    0.82       4.2 +/-    0.82  0.050 / 0.090
G19     324.1          70.2                3.0 +/-    0.44       3.2 +/-    0.44  0.040 / 0.020
G28     89.8           39.7                4.4 +/-    1.04       6.4 +/-    1.04  0.030 / 0.020
G30     157.9          13.1                6.2 +/-    1.78      16.2 +/-    1.78  0.160 / 0.190